Kennametal 6770555 Ceramic Turning Insert CNGA432E

Product Description

The KENNAMETAL 6770555 is a CNGA432E ceramic turning insert with KYHK15B grade designation, designed for high-speed interrupted and continuous cutting operations on difficult-to-machine workpiece materials. The insert features an AlTiN coating applied via PVD process over an alumina TiCN ceramic substrate, delivering thermal resistance and edge stability under high-temperature cutting conditions. Key dimensional specs include a 0.5 inch inscribed circle, an insert length of 0.5077 inches, a thickness of 0.1875 inches, and a corner radius of 0.0313 inches. The neutral hand orientation suits both right- and left-hand toolholders. Licensed KENNAMETAL KENLOC series clamp-and-pin holding is the intended mounting method.

This insert is rated for turning, facing, and boring operations and is primarily intended for machining cast iron, superalloys and titanium, and hard materials. With four cutting edges, a flat-top chip breaker, a honed cutting edge style, and a negative rake and side clearance geometry, the 6770555 is suited to production turning applications where tool life and surface finish consistency on hard or abrasive workpieces are priorities. It conforms to ANSI insert code CNGA432 and ISO insert code CNGA120408E, making it interchangeable within standard CNGA insert tooling systems.

Key Features

• AlTiN PVD-coated alumina TiCN ceramic substrate for thermal and wear resistance in high-speed cuts
• Diamond (rhombic) 80-degree insert shape (CNGA) with negative rake and negative side clearance geometry
• Four usable cutting edges with flat-top chip breaker and honed edge style
• 0.0313 inch corner radius for controlled edge strength on hard and abrasive materials
• Compatible with clamp and pin holding systems; KENLOC series toolholders
• Conforms to ANSI CNGA432 and ISO CNGA120408E standards; multi-use for turning, facing, and boring

Compatibility

Designed for use in KENNAMETAL KENLOC series toolholders that accept CNGA-style inserts with clamp and pin retention. Conforms to ANSI CNGA432 and ISO CNGA120408 dimensional standards, making it a direct fit in any ANSI- or ISO-compliant CNGA toolholder with matching insert pocket geometry.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured in a locked turret or tool block before seating or removing the insert. Use proper insert removal tools to avoid chipping the cutting edges or damaging the seating pocket. Inspect the insert pocket and clamping pin for wear or debris before installing a new insert, and verify clamp torque per the toolholder manufacturer specifications.